Citrix has officially announced that XenDesktop will be made available during Citrix Synergy on May 20, 2008. This project has been in the works for more than two years now. It saw a major shift when Citrix acquired Xen Source. Before that the project was more diversified in regards to virtualization. The focus on Xen is not a bad thing given that there is better integration work going on.
The XenDesktop hub is probably the best place to visit if you want more information. Another option is to read the XenDesktop FAQ. If you are wondering what kind of features it will have, look at XenDesktop Features.
There is only a month to go before launch. The internal excitement about this release is growing and the Citrix Synergy event should see this energy at a high level.
The development cycle for PortICA is coming to an end. Soon all the team members will be working on other projects in Sydney.